What are the real costs of having another child/baby?

So I've read the GA thread and some others about family size and cost to raise a child, it raises this question - what are the real costs of raising a child?

I know people spend thousands on nurseries, the best carseat, and stroller or baby carriers.

Then there's formula and diapers (is cloth reasonable for one child/if you must share laundry facilities)

The cost is obviously higher if it's your first or you're starting over. If you must work, childcare must be considered.

What about classes & preschool & sports? Are those necessary or just extras.

My children are older, 11 & 8 and I've always heard kids get more expensive, but we haven't eclipsed the $325/week I paid when both were in childcare full-time. We do attend public/charter schools and keep sports to a minimum.

The debate question is: how much does another child add to the cost of the family?

For debate's sake, consider if family has little ones for handmedowns or if it's first/starting over baby. It makes a huge difference I'm sure.

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Married Mom to 2 big kids, a December 2013 princess and our little furBuddy, teacher to many more

I just had my second, another boy. ODS was born in January and YDS was born in February so even the clothes were the right season. Besides diapers and formula, I haven't had to buy anything else for YDS because we already had it all. They are 2 years apart. So the cost for us has been minimum.

Had I had a little girl or had they been farther apart it would have cost more money buying new things and what not.

You have to factor in insurance and all that other stuff too. As the boys get older, having two will definitely get more expensive because they will be eating more, playing sports, going to zoo's and different activities and all kinds of things. I'm not sure if you can put a number on having another but in the long run it probably cost double as much as having one.

Well, our insurance changed, so we started with $6k for medical bills. We bought a few things for the new baby. Mostly reused stuff from our son. Her daycare is $900 a month. Most impactful is that I needed to change jobs, I could no longer accomplish what I had managed previously--just too much on my plate. So that is around -$10k a year . I needed a new breast pump and spent about $200 on different bottles that she refused. Now she is pretty cheap at 11 months

Wow! 16k-17k that's a lot. Does that include increased costs to health insurance. I wonder what the average childcare costs are - around here it's $200 week for infant care (a bit more for a learning center)

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Married Mom to 2 big kids, a December 2013 princess and our little furBuddy, teacher to many more

$100 a month for transporation per kid? I didnt realize my kids took a different car than I did and had to be added to my insurance and pay for their own gas. Maybe at 16+ but for the first 16 years... no.